Packing-ring.



F. L. BOWEN & W. I. COOK.

PACKING RING. APPLICAHON FILED J UL Y'29. I914.

Patentd Aug '31, 191: v

y Jfuwem nrrnn stars are FRANK L. BOWEN AND WILBURN I. COOK, OF BIRMINGHAM, ALABAMA.

PACKING-RINSi.

' Specification of Letters Patent.

Patented Aug. 31, 915.

Application filed July 29. 1914-. Serial No. 853,980.

, and WILBURX 1. Coon, cit-iz nsot the United States, residing at Birmingham, in the county of Jefferson and State of Alabama, have invented new andusetul Improvements in Packing-Rings, of which the'lollowing is aspecification.

Our present invention relates to i1nprovc ments in packing rings and has particular application to an expansihle ring.

In carrying out the present inventimn-it is our purpose to provide an expansihle packing ring which will he found especially useful in packing the pistons of internal combustion engines, steam engines. ammonia. compressors and analogous devices and the plungers or" pumps and which will embody two split annnli disposed one ahout theother and surrounding the piston or plunger, and m ans holding said annuli against relative turning nmvementso as, to preserve the eflieiency of the ring.

It is also our purpose to provide a packing ring of the class dcsci-ihed which will embrace the desired features of simplicity. eliiciency and durability. which may he manufactured and marketed at a minimiun expense and which will wear a relatively long period of time.

lVith the above and other ohjccts in view. the invention consists in the construction. cemhination and arrangen'ient of parts here-- inai'ter set forth in and l'aliiugwithin the scope of the claim.

in th: accompanying drawing: Figure l. is a view in elevation o'l a. packing ring constructed in accordance with the present invention. Fig. 2 is a transversesectional view therethrough. Fig. 3 is an enlarged fragmentary scrtioi'ial view slu'nving a modified form of the in ention.

Referring now to the drawing in detail.

.lv designates an annulus split as at 2 and ha ving' a. rahhet or groove 3 formed in the periphery thereof and opening onto one edge. In the present instance, the hottom wall ot this ralohet or groove is eccentric to the axis of the annulus and seated within the roove 3 is a second annulus l silit ms at 5 and having the split portion thereof disposed at (1 point diametrically opposite the split in the annulus 1. The inner wall ot the annulus 5 conforms to the configura- ,tion of the bottom wall of the groove or rahhet 3 so that when the annuli are assembled the outer surface of the annulus L lies flush with the-outer surface of the annulus 1;

In p action, the annulus l is sprung into the groove in the piston or plunger and the annulus at sprung into the rahhet in the annulus l and the split portions of the annuli disposed at dialmetrically opposite points. By means of the eccentric wall of the rahhet and similar inner wall of the annulus 4. relative rotation of the annuli is prevented, while the ring as a unit Will expand and contract incident to the split annuli.

In the modified form of the invention illustrated in Fig. the bottom wall of the rahhet is arranged concentrically of the axis of the annulus, while the inner wall of the annulus et is similarly arranged and the confronting walls of the annuli are formed with registering grooves (3 constituting an opening to receive a dowel pin 7 wherehy relative movement of the annuli, when the. packing ring is applied. is prevented. This construction wherelrv relative movement of the aunuli'is prevented, is of vital importance. inasmuch as grease and other foreign matter that accmnulatcs hetween the annuli suhject the latter to undue wear it thei are permitted any-torsional or sliding movements relatively.

While we have herein shown and descrihed certain preferred forms of our invention by way ot' illllStl'ltlOll. we wish it to he understood that we do not limit or confine ourselves to the precise. details of construction herein. descrihed and delineated. as modification and variation mav'he made within the scope of the claim without departing from the spirit; of the invention.

packing ring comprising a split cccentric ring of lL-shaped formation in cross section. a second split eccentric ring rectangular in cross section and adapted to fit on the flange of said first ring. the splits thereof being diametrically opposite when ta'cting perip v cincular groo've'extending in a, latera tion- 'from the sideof said rings when as-.

assembled, .eaeh ring arranged in their 001 ery Wlth a registenng semid1recsembled, and a pinadepted to be inserted in said lateralgr oo've whereby relative "moveme lt betwemisaigl'ring s; obviated.

W. J. ODONYNELL,

VAN HAYES, J r. 

